<div class="pic-div">
  <img *ngIf="logoUrl" [src]="logoUrl" alt="收款码">
  <div class="logo-div">
    <nz-upload style="display:block;"
        nzMultiple
        [nzShowUploadList]=false
        [nzLimit]="1"
        [nzFilter]="filters"
        [nzFileList]="fileList"
        (nzChange)="logoChange($event)"
        nzAction="{{QRcode}}">
        <button nz-button  [nzLoading]="isLoading">
          <i nz-icon type="upload"></i><span>上传支付宝收款码</span>
        </button>
    </nz-upload>
  </div>
</div>